Paper feeding device



1940- F. M. CARROLL ET AL 2,189,025

PAPER FEEDING DEVI CE Filed Jan. 1, 1935 10 Sheets-Sheet 1 1 30 180 33 2 o 556 I 0 555 553) @104 652 as 653 77 99 20 554 473 23L w v o 485 {Ah/k INVENTOR. BY

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Feb. 6, 1940.

F. M. CARROLL ET AL PAPER FEEDING DEVICE Filed Jan. 1, 1935 10 Sheets-Sheet 2 ATTORNEYS.

1940- F. M. CARROLL ET AL 2,189,025

PAPER FEEDING DEVICE Filed Jan. 1, 1955 0 She'etsSheet a FIG.3.

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' EJTTORNEYS.

Feb. 6, 1940. F. M. CARROLL ET AL PAPER FEEDING DEVICE Filed Jan. 1, 1935 10 Sheets-Sheet 4 F61). 6, 1940. F; M CARROLL ET PAPER FEEDING DEVI CE Filed Jan. 1, 1935 10 Sheets-Sheet 5 65% fZZZ/TOR.

A TTORNEYS.

PAPER FEEDING DEVICE Filed Jan. 1, 1935 10 Sheets-Sheet 7 NVENTOR.

a I I ATTORNEYS.

'F F. M. CARROLL ET AL PAPER FEEDING DEVICE Filed Jan. 1, 1935 10 Sheets-Sheet 8 FIGJO.

N V EN TOR.

69 l 'ATORNEYS.

Feb; 6, 1940. F. M. CARROLL ET AL 2,189,025

PAPER FEEDING DEVICE Filed Jan. 1, 1935 10 Sheets-Sheet 9 CARR A 6E MDTJR Fl Mh INVENTOR. fizm A TTORNEYS.

Feb. 6, 1940.

F. M. CARROLL ET AL PAPER FEEDING DEVICE Filed Jan. 1, 1935 29 RESET I RESET 10 Sheets-Sheet I0 AUTO RESET CONTROL :E MOTOR CONTROL ATTORNEYS.

Patented Feb. 6, i940 2,189,025

UNITED STATES PATENT OFFICE PAPER FEEDING DEVICE Fred M. Carroll and John Henry Bakelaar, Bingliamton, N. Y., alsignors to International Busineas Machines Corporation, New York, Y., a

co poration of New York Application January 1, 1935, Serial No. 1

34 Claims. (Cl. 197-133) This invention relates to improvements in the contacts are again closed for feeding operapaper feeding devices. tion.

The improvements are illustrated as changes in Another object of the invention is the provithe paper feeding devices disclosed in our cosion of other interlocks between the sheet eject- Pending application, Serial No. 659342, filed ing devices and the printer mechanism. The March 3, 1933, which has eventuated in Patent printer is stopped after'total printing. This is ,066,305. done to allow time for the operation of the An.object of the present invention is to proejecting devices before resuming operation of the vide means for automatically feeding the record printer.

m sheet a variable number of line spaces to skip the A further object of this invention is the provispace between the printing of a heading and the sion of a removable record sheet frame with pin recording of an item. A heading may consist of feed sprock ee which may be geared to the a name and address printed under control of regular platen drive f uto at line Spacing perforated record cards. A perforation in the and ejection. The sprocket wheels are adapted 16 last address card initiates the skipping or spacto cooperate with continuous perforated borders 1:;

} ing operation which continues until a cam seton the side of standard register sheets. The

table for a required number of line spaces stops sheets may be in duplicate or triplicate with inthe paper in position for printing the first item. terspersed carbons. They'may vary in width and From there on, line spacing and ejection of the be wound on a roll or be arranged fan folded.

2d record sheet is carried on in the usual way. Another object of the present invention is the 20 Another object of the present invention is the provision of d vi s f tak n p t Slack provision of means for automatically initiating tween a toothed ejection drive sector and a one or more line spacing operations subsequent meshing pawl block on a link driven thereby. to an ejecting operation usually at the end of 5 These devices prevent the jerk and impact of a form. This is done in order that listing of a large late ej c n Pi k p due to lost motion. As soon 25 mm: of items may be continued from one form as ejection i ini ed a Spring actuated cam to the next without printing items in the heading to close the space between the driving and driven space at the top of a form. A feature of the teeth in the el i n v head spacing control is the use of the same de- I Another feature of the present invention is the so vices used to initiate and stop the space skipping provision of a common manipulative lever for operation set forth above. a operation of line spacing and ejection. The

Another object of the present invention is the lever may be rocked in one direction to trip a provision of aplurality of driving gear trains for line space control armature and moved in the use in variable speed ejection or shifting of the other direction to actuate an ejection control as record sheet. A fast drive may be selected for. armature. short movements. or elections of the sheet and a A still further object of the present invention o peed may be used for ejections longer is the provision of a lock which is automatically than a predetermined space (3 inches is taken operated as soon as ejection is initiated. This as an example iii thepresent case). A selection 1001! cooperates with a clutch between the p and interlock late cooperates t t gear and the ejection drive mechanism for the platen. 40

trains to Prevent the connection of more than one The clumh is held 0105611 during the l n of Bear train at a time. the record sheet.

A f at of t present invention is the The devices of the invention are illustrated in a viston of interlocks between the selected ejection set 0! drawings which accompany and form part 4 spaci th variable speed gearing and the jean of the present specification. drive motor. This interlock includes an elec- In the drawings:

. Fig. 1 is a side elevation of the paper carria e tric circuitthrough the drive motor including 1 8 contacts operated by the ejection spacing and a 22 62 3 2 section taken t h speed selection means. The contacts open to de- F1 2 is 1 i we the motor when a fast gea tram g. a sect onal elevation view taken at the 50 left of the carriage and showing the housing con- 18 selected at the sa e time that a fl' is made 'taining the line spacing and ejection mechanisms.

for a long ejection. Then, either the slow speed Fig, 3 1 section through the top of the housing gearing must be selected or the selection ejeccovering the line spacing and ejection mechation length broughtdown to 3% inches before nisms showing a plan view of these devices. 5s

Fig. 3A is a detail view of the clutch connections. at the end of the platen shaft.

Fig. 4 is an elevation view of the two-speed gearing provided between the driving motor and the paper ejection shaft.

Fig. 5 is a sectional view taken along the line 55 in Fig. 4 and showing the interior construction of the two-speed gearing.

Fig. 6 is an elevation view of the line spacing control mechanism.

Fig. '7 is a side elevation view of the settable line spacing and ejection controls with the electrical contacts operated thereby. Fig. 8 is a section of the paper spacing and ejection mechanism housing taken along line 88 in Fig. 7 and showing an end view of the contacts.

Fig. 8A shows a portion of a perforated record card.

Fig. 9 is an elevation view of the ejection clutch and driving mechanism.

Fig. 9A is a rear view of the eject sector assembly. v

Fig. 10 is a front elevation view of a pin-feed attachment for the paper carriage.

Fig. 11 is a side view of the mechanism shown in Fig. 10.

Figs. 12A and 12B taken together form a wiring diagram of the electrical controls associated with the paper feeding and tabulating mechanisms.

Fig. 13 is a timing chart showing the time of operation of the cam contacts governing the operation of the paper feeding mechanisms.

Referring to Fig. 1, it is noted that the platen 5| is mounted on the carriage unit which in turn is supported on the tabulating frame 52 in position adjacent the type bars 53. The tabulating frame 52 carries a carriage supporting frame 54 (Fig. 2) which is provided with a series of rollers 55 for guiding and supporting the movable carriage frame 56. Attached to the right end of the carriage frame 56 is the carriage side plate 51 (Fig. 1). At the other end of the frame 56 is attached another side plate 58 (Figs. 2, 3 and 8) acting as a support for the left end of the platen holding members. Swinging between the side frames is a rectangular bar 68 (Figs. 3, 8 and 11) with ends in the form of trunnions 59 (Fig. 1) fitting in bearings on the side frames 51 and 58.

It is about this bar 68 that the platen 5| is swung through an angle of about 180 degrees in a counterclockwise direction to bring the platen in position to receive the end of the record material.

A bracket 6| (Figs. 3 and 8) attached to the left end of the rectangular bar 68 forms a support for one end of the platen, and the lever 62 (Figs. 10 and 11) forms the support for the platen at the other end. Parts 68, 6|, and 62 form a bail which is pivotally mounted at 59 and adapted to be swung toward the rear of the machine; The lever 62 is provided with a handle 63 which may be grasped by the operator of the machine and swung in a counterclockwise direction through. one half of a revolution to bring the platen into a raised record sheet receiving position.

The platen 5| is mounted on a shaft 69 which is carried in a bearing I8 (Fig. 10) on the lever 62 and the other end pivots in a bearing H on the bracket 6|.

The record paper passes over a guide 14 (Fig.

11) and then is directed at a tangent to the I platen 5| and is drawn around the platen, under feeding rollers 15 and out beneath the cutting plate 16. The paper guiding and feeding devices are moved along with the platenwhen it is lifted from the normal position. The paperguide 14 is mounted on side plates 11 (Fig. 10) which are pivotally connected to the platen shaft 69 and to a shaft 18 suspended between the side plates 11 and links 19 pivoted at 88 on the carriage side frames 51 and 58. By means of this form of toggle link connection. the paper guide is adapted to maintain a position at an angle tangent to the platen when it is in a normal feeding position and in the raised paper inserting position.

The record paper is guided on the sides by guide members 12 (Fig. 3) in the form of balls which are supported on and movable along shaft 18. A finger piece 8| associated with the guide bail may be manipulated to move and lock the guide in a selected position.

The pressure feed rollers 15 (Figs. 3, 10 and I 11) are supported on a shaft 82 which is held on overturned projections extending from a series of frames 84 pivoted at 85 on the rectangular bar 68. The pivot at 85 is formed by a projection on the frame 84 engaging a narrow slot cut in the rectangular bar 68.

The feed rollers 15 are normally held against the platen 5| by bow springs 86 (Fig. 11) each of which is tensioned and held between a notch in frame 84 and a notch cut in the top of rectangular bar 68. The shaft 82 carrying the feed rollers 15 is provided with a pinion 89 secured in line with a gear 98 secured to the platen shaft 69. By means of this connection the feed rollers 15 are rotated whenever the platen is turned for a record feeding operation.

A means is provided to disconnect the feed rollers from engagement with the platen when it is desired to insert or remove record material. Each of the frames 84 carrying the feed rollers is formed with a projection 9| which is alongside the rectangular bar 60. Between projection 9| and bar 68 is placed a shaft 92, with a beveled side of the shaft cooperating with the end of the projection 9|. The shaft 92 is held in this position by means of a groove cut in the side of rectangular bar 68.

A thumb-piece 94 is attached to the shaft 92 to operate the same. When the shaft 92 is rocked, the frames 84 are moved in a clockwise direction about the pivot 85 to withdraw the feed rollers 15 from the platen 5|.

The automatic feeding of the platen is brought about by connections cooperating with the left end of the platen shaft, as shown in Figs. 2, 3 and 8. .The platen driving gear I81 (the actuation of which is described hereinafter) drives an idler gear |88 loosely mounted on the trunnion 59 of the rectangular bar 68. The connection continues through gear I88 meshing with the teeth -|89 cut in a clutch member H8, which engages a clutch plate I secured to the platen shaft 69. The clutch plate II is formed with teeth 2 in the form of a star wheel.

Cooperating with the star wheel teeth in the clutch plate I is a roller H3 (Fig. 2) mounted on a lever H4 pivoted at 5 on the bracket 6| supporting the platen. A spring urges the roller H3 into depressions formed by teeth H2 and thus serves to locate the platen in a correct position for each line space.

When the platen is adjusted by hand, the clutch member 8 is forced to the left (Fig. 3A)

against the pressure of a spring III which normaliy holds it in engagement with the teeth on .clutch plate III. A collar II8 attached to the end of the platen shaft 68 forms an abutment against which the compression spring II'I rests, the other end pressing against the clutch mem her 0. The gear I08 is wide enough to maintain engagement with gear teeth I08 when member'l I0 is out of clutching position.

When the platen is swung to the upper position, the gear teeth I08 cooperate with the stationarygear I08 to turn the clutch member H0 in a counterclockwise direction (Fig. 2). This rotating movement is not transmitted to the platen shaft because the shaft is held by the cooperation between the star wheel I I2 on clutch plate III and the detent II4.

On the downward movement of the platen there is a positive driving connection between gear I08 and the platen shaft 68 unless the clutch member H0 is shifted to the left (Fig. 3A) and disconnected from plate III. For this reason, lever II8 (Figs. 2, 3 and 3A) is provided to shift clutch member H0. The clutch lever is pivoted at I20 on bracket I2I secured to the trunnion 58 of the rectangular bar 80. The lever cooperates with the clutch by means of an arouate oil'set I22 thereon engaging in a groove I28 in clutch member IIO as the platen is lifted or lowered into position. The clutch lever H8 is ,provided with a finger piece I24 which may be 'manipulated to disconnect the clutch members when it is desired to back-space the platen.

An adjustable means is provided to control the time of engagement of the clutch member III! with the plate III- as the platen is lowered, thus providing for the feeding of an inserted strip to bring any desired amount of head spacing above the printing line for the first item. This is brought about by camming the lever II8 to declutch the platen for a portion of its downward movement, and releasing the lever to permit the clutch connection to take hold during the remaining part of the motion. The cam surface I25 (Fig. 3A) which cooperates with an extension I28 on the side of lever II8, forms an annular part of a disk I2'I loosely pivoted on trunnion 58. The disk has a raised annular ring I28 which is knurled on the top face to permit circular adiustment by hand. A portion of the periphery of the disk is cut to form teeth I28 (Fig. 2) for locating and locking the disk in position. Cooperating with the teeth I28 is a locking member I slidably mounted on pin projecting from carriage frame 58.

A screw I82 may be tightened to hold member I88 against frame plate..58 afterthe disk I21 has been brought around to the desired head spacing position. As the disk I21 is moved in a counterclockwise direction (Fig. 2) the end of the raised cam portion I25 is brought closer to the projection I26 on the lever II8 when the lever is in the raised position.

Then, as the lever is swung to the lower position along with the platen, it reaches the end of the cam whereupon the lever I I8 is permitted to rock in a counterclockwise direction (Fig. 3A) to shift the clutch member H0 and connect the platen so that it is driven from the time the projection I25 reaches the end of the cam until the clutch lever is brought to the home position. Each of the notches I28 represents a space of one line of head spacing.

The mechanism described hereinbefore is situated around the platen and between the platen side plates 51 and 58. Other automatic mechanism is provided to control rotation of the platen. This mechanism, which is about to be described, is compactly arranged and formed as a unit which is secured to the left side of the platen frame. The only driving connection between this automatic carriage control unit and the other carriage control mechanism is through the gear I01 (Figs. 2 and 3). I

The automatic carriage control unit is provided with manually adjustable mechanical arrangement for varying the line spacing, determining whether ejection is to occur or not, selecting the speed of ejection, setting the distance on the record between the heading and the first item setting the length of form to be printed upon and setting the number of lines to be printed before ejection. Other electrical'switches may be adjusted to control the unit so that line spacing may or may not be effected by the occurrence of a totalyspacing under listing and tabulating control, and spacing without cards in the tabuiator.

Adjustments may be made to secure ejection after every item, ejection according to the occurrence of minor, or major group control changes, or ejection at the presentation of the end of a record form. A motor drives the mechanism in the unit according to the setting of the controls mentioned. 'I'he'entire unit is secured to the carriage frame and is moved along with the same to the various transverse printing positions.

The automatic carriage control mechanisnf is held in a frame comprising'a casting I84 (Figs. 2 and 3) secured to the carriage side plate 58 and guide frame 56. The casting frame I84 forms a support for the carriage motor CM. A casing plate I88 attached to frame I84 forms a cover for the speed changing gearing. A number of bosses project from the inner side of the casting frame and attached to some of these is a center plate I88 (Fig. 3) which acts as a support for many of the shafts in the unit. The mechanism projecting beyond the plate I88 is protected by a cover I89 which coincides with the contour of the frame I84 making an enclosed box-like unit of the carriage control mechanism.

A bracket I (Fig, 5) projecting from the carriage frame. I84, forms a bearing for the shaft I 42 of the carriage motor CM. A pinion I48 on the motor shaft I42 meshes with a gear I44 pivoted on a stud I45 on the side of bracket I4I. Attached to gear I44 is a smaller gear I in mesh with a gear I88 keyed on the shaft I81. On the side of gear I85 is secured a gear 88 in mesh with an idler gear 84 (Fig. 4). The driving train of connections continues through gear 84 meshing with another idler gear 85 which in turn drives a gear 86 fastened to the line spacing drive shaft iii. The gear connections just traced form a constantly running train from motor shaft I42 to line spacing drive shaft I5I. Other gearing, also under the cover I 88 with the line space drive, forms a selective two speed drive for the ejection mechanism described hereinafter.

Cont'nuing the tracing of the line space drive, reference to Fig. 6 shows that shaft .I5I carries a clutch plate I52 attached thereto. Adjacent the toothed plate I52 is a cam I54 loosely pivoted on shaft I5I. This cam carries a clutching pawl I55 pivoted at I58. A compression-spring I58 mounted in a stud on cam I54 tends to engage pawl I55 with clutch plate I52, but an extending ta l on the pawl is normally obstructed by the end of a lever I88 connected to the armature "I of the line spacing magnet LSM. The lever I88 is pivoted on a stud I62 and is urged in a counterclockwise direction against stop pin I63 by a spring I64.

When the line spacing magnet LSM! is energized, the lever I60 is rocked in a clockwise direction, releasing the clutch pawl I55 which then engages the clutch plate I52, thus connecting the cam I54 to the driving shaft I5I. As the cam I54 rotates, it operates alever I68 through a roller I68 on the lever in cooperation with the periphery of the cam. The lever I68 is pivoted on a stud I and is provided with an extending arm which is cut to form three notches. A link I12, placed adjacent the lever I68, carries a pin I13 adapted to cooperate with any one of the three notches in lever I68. -The other-end of link I12 is pivotally connected at I14 to a line spacing plate I15 loosely mounted on the platen feed shaft I16. The plate I15 carries a feed pawl I11 pivoted at I18 in the plate and adapted to cooperate with a ratchet gear I18 fixed to shaft I16. This shaft is secured to gear I01 (Fig. 3) and thereby is adapted to turn the platen.

From the connections mentioned, it may be noted that as the cam I54 (Fig. 6) is rotated, the lever I68 is rocked in a clockwise direction, pushing link I12 down and rocking the plate I15 so that pawl I11 advances the platen shaft I16 one or more steps in a counterclockwise direction The amount of motion imparted to the platen feed shaft is determined by the adjustment of the end of link I12 so that pin I13 cooperates with any one of the three notches in lever I68. If the pin cooperates with the notch nearest the pivot of the lever, the motion imparted will amount to one line space. When the link is lifted to cooperate with the center notch the motion carried to the platen amounts to two line spaces. Lifting of the link to the highest position causes cooperation with the end notch in lever I68 and connects the line spacing devices to produce three steps of motion.

The manual adjustment of link I12 is brought about by means of a manipulated arm I80 (Fig. 2-) extending from the side of the carriage frame I34. The arm. I80 carriesa knob I8I with a plunger which the operator may set to hold the arm in any one of the three positions identified on the side of the frame. A shaft I82 (Fig, 6) is connected to the arm I80 and has secured thereon another arm I83 with a tab I84 cooperating with the side of link I12. By means of these connections the link I12 is swung to a.

space selecting position by arm I 80. The link is held against the side of lever I68 by a guiding strip I85 secured tolever I68. A spring I86 urges the lever I68 in a counterclockwise direction' and tends to hold roller I68 against cam I54. Link I12 is held in constant cooperation with tab I84 by means of a spring 64.

A spring I 81 wound around stud I18 tends to move pawl I11 into cooperation with ratchet gear I18. However, in the normal position of the parts, a cam face on the lower portion of pawl I11 cooperates with a stud I88 projecting from the frame I34 in such manner that the pawl is forced away from the gear. The same stud I88 serves as a stop for the plate I15 when it is drawn to the home position by a spring I88.

Secured to the side of ratchet gear I18 is a star wheel I80 provided for the purpose of normally preventing backward movement of the line spacing shaft I16. Cooperating with the star wheel I88 is a pawl I8I loosely pivoted on shaft I82 and held into cooperation with the star wheel by spring I83. At certain times in the operation of the machine, the pawl I 8I is disengaged from the wheel I80 by a link I84 which is slotted to engage a pin I85 on the pawl to depress the pawlas explained hereinafter.

In addition to the above described line spacing connections to the platen drive shaft I 18, other devices are provided to feed or eject the record paper for wide spacing. Many of the gears previously mentioned, namely; gears I44, I35, I36, 83, 84, 85 and 86 (Figs. 4 and 5) are used in ejecting as welfas line spacing. A'ttached to gear 86 is a gear 65 meshing with a former is geared almost directly to drive pinion I43 while the latter is driven through a train of gearing involving two speed reductions between gears 83;- 84 and 65, 66. The machine operator may choose the speed of record ejection accordingto the distance or space to be ejected. For spaces less than 3 /2 inches it is advisable to use the high speed train of ejection gearing, while for all longer lengths the low speed train should be used.

The shafts 61 and I31 are held in and out of driving position by wire spring clips 13 cooperating with pairs of grooves 81 and 88 in the shafts. If it is desired to select the slow speed shaft 61, the knurled screw head 88 thereon is rasped and pulled to the left (Fig. 5) until pinion 81 meshes with gear 88 and clip 13 engages groove 88. This axial movement of shaft 61 takes place without disturbing gear 66 because of the key connections IOI between the two permitting relative axial displacement but maintaining a fixed association in rotation. In the same way, if it is desired to engage the high speed train of ejection gearing, a knob I00 is grasped and shaft I31 is pulled to the right until pinion 88 'is in mesh with gear 68 and clip 13 drops into groove 88. The cover I33 is cut out to give access to knobs 88 and I00.

An interlock is provided to prevent the engagement of more than one gear train at a time. A

supporting plate I02 (Fig. 4) for the interlock-' ing devices is attached to stud I45 and another stud I03 fixed in casting I34. Protruding from a screw stud I41 in the center of plate I02 is a loosely pivoted knurled knob I04 carrying an interlock disk I05. Two semi-circular notches I26 and I21 are cut in the periphery of disk I06. The concentric edge of the disk cooperates with shoulders on the left ends (Fig. 5) of the shafts 61 and I31 to prevent axial displacement. It is only when the disk is turned to bring one of the notches into position with an associated shaft that the shaft is free for axial movement. As shown in Fig. 4, the notch I21 is concentric with shaft I31 adapting the gearing for selection of the high speed gears, while shaft 61 is locked in an ineifectiveposition by the .edge of disk I05. If it is desired to select the slow gear train; knob I04 is grasped and turned to bring notch I26 to coincide with shaft 61. The edge of the disk cooperates with the ends of the bushings carryleft The disk I is held in an adjusted position by a detent pin I03 cooperating with a pair of depressions I23 in the edge of the disk. The pin is riveted in a detent lever II5 pivoted on stud I21 on the side of plate I02 and urged-by spring I23 into cooperation with the disk. A third depression I23 in the disk I05 marks a position wherein the disk may be stopped by the detent to lock both trains of gearing out of operation when ejection movement of the record paper is not desired. A slot I3I in disk I05 cooperates with a screw I43 on plate I02 to limit the move-.

ment of the disk.

Cooperating with' disk I05 is part of an electrical interlock preventing the operation of the paper feeding devices when the high speed gear train is improperly selected for a long paper ejection feed of more than 3 inches. A cam I43 riveted on the side of disk I05 cooperates with a lever I43 pivoted on stud I03 and formed with an offset lug I50 engaging the side of'an insulation .block- I53 on one blade of contacts I51. When the high speed gear train is selected, lever I43 is rocked in a counterclockwise direction to open contacts I51. These contacts are fastened to insulating bars on frame I34 and wired in series with the circuit energizing the drive motor CM. Thus the motor is disabled as a high speed drive is selected unless other connections are made to complement the selection. Other contacts described hereinafter are in parallel with the contacts I51 in the motor circuit and are closed when an ejection of less than 3 inches is selected. The tension in the contact blade carrying block I53 tends to close contacts I51 so that when disk I05 is moved to select the low the pinions 31 or 03, previously mentioned. Re-

ferring to Fig. 9 it is noted that gear 33 is pivoted on stud "I in frame I34 and carries attached thereto a toothed clutch plate I31. Loosely pivoted on the same stud "I is an ejecting cam plate 200. Pivoted on the side of cam 2001s a pawl I33 onstud I33. The pawl is in alignment with clutch plate I31 but is normally held out of engagement therewith by a lever I abutting against an extending tail on the pawl. The lever is pivoted at 202 and attached to an annature block 203 associated with the ejecting control magnet EM. A compression spring I35 on cam plate 230'presses against the pawl and tends to engage it with the clutch plate. When the magnet EM is energized, lever 20I is rocked outside of the carriage control unit.

in a clockwise direction, releasing pawl I33 and clutching the ejecting camplate 200 to the driving gear 30.

Either ejecting or a line spacing operation may be effected by a manual adjustment onthe This is done by manipulation of a lever 204 (Fig. 3) which may be moved in one direction to actuate the eject armature 203 (Fig. 9) and moved the other way to trip the line space armature I3I (Fig. 6). The lever 234 is pivoted on the end of stud 202 and formed with three arms one of which is bent to project out of anaperture in a case I34 in position to be grasped by the fingers of the operator of the machine. The second arm is formed with an offset 205 (Fig. 9) overlying armature 203. The third arm carries a stud 206 (Fig. 6) which acts as a terminal for a rod 201 reaching down into contact witharmature lever I50. A spring 200 attached to stud 203 tends to hold the lever 204 in a centralized position.

-Movement of the lever in a clockwise direction (Figs. 6 and 9) causes an eject operation and movement in a counterclockwise direction causes a line spacing operation, the clutch mechanisms being actuated just as though magnet EM or magnet LSM were energized.

Before describing the other connections for performing an ejecting operation, it is believed well to mention that such an operation may take place at any point during printing down the length of a record sheet. Ejection is initiated by energization of magnet EM on the occurrence of a total, after a certain number of lines, or at the end of a form. In Fig. 7 the ejecting devices are shown in the normal position. There it is noted that a link 2I0 is'articulated at 2 on side of plate 200 and at the other end it is pivotally connected at 2 I2 to the side of an ejecting frame 2I3 (Figs. 9 and 9A) pivoted at 209 on the frame of the control unit. This rocking eject frame 2I3 is formed in the shape of an arc and carries a similarly shaped plate 241 with a series of teeth 2 cut in the inner side of the arc. Cooperating with these teeth is a block 2I5 formed with a single tooth 2I5 adapted to ratchet over the teeth 2 and engage any one of the teeth as a link 2I1 carrying the block 2I5 is drawn along the inner surface of the arc during line spacing operation. The block 2I5 is loosely pivoted on link 2I1 by means of a stud 2I3 mounted on link 2l1. An arcuate guide strip 2I3 secured to plate 241 cooperates with a groove in the top of block 2I5 and serves to hold the block in alignment with teeth 2. When the clutch connection comprising pawl I33 (Fig. 9) and clutch plate I31 is made effective by the energization of the magnet EM or by rocking lever 204, the plate 200 is connected to turn in a clockwise direction and moves link 2I0 and frame 2I3 to the rightv with a gradually accelerated motion until the plate 200 has moved through an angle of ninety degrees and then the motion is retarded until the link is practically at rest as the plate reaches a position after 180 degrees of motion.

Then the same type of motion is repeated as the plate goes through the final 180 degrees in arriving back to the home position after a complete revolution.

Continuing now with outlining the connections of link 2I0 to the line spacing devices for the purpose of ejection, it is noted that in its motion to the right the link carries along the ejecting frame 2I3 by rocking it in a clockwise direction about the pivot 203. As this is done, the teeth 2 on the eject plate 241' engage the block 2I5 'on the end of link 2" and move this link, to the right. .The right end of link 2" is connected by a stud 246 to a sector I20 loosely pivoted on a shaft 22I The sector teeth are in mesh with a pinion 222 which may be clutched to the line spacing shaft I13, which, as noted hereinbefore, serves to space the platen through the connections to gear I31 (Fig. 3).

"Referring to Fig. 8 it may be seen that shaft I13 is carried in a bushing 223 projecting from center plate 136 and extending in alignment with the hub on gear 101. Adjustably secured to the end of shaft 116 by screws "is a collar 225 provided with a projection 221 adapted to cooperate with a notch 228 (Fig. 9) cut in the side of pinion 222. If the pinion 222 is held out of cooperation with the projection 221, the motion of sector 220' is not imparted to the line spacing shaft 116. The pinion 222 may be moved and held out of engagement with the shaft 116 when it is desired to prevent ejection. The pinion is positioned by a shaft 229 (Figs. 3, 7 and 8) carrying a positioning member 230 which cooperates with a circumferential groove 231 (Fig. 8) cut in the pinion 222.

A pin 2411 on the member 230 cooperates with a hole located in the bushing 223 and serves to hold the member in cooperation with the pinion. At the other end of the shaft 229 (Figs. 2 and 3) is mounted a knurled knob 232 attached to a positioning blank 233 cooperating with the pin 234 projecting from the side of frame 134. Another pin 235, slightly higher than pin 234, cooperates with an elongatednotch 236 out in the side of member 233. By means of the pins and the member 233, the shaft 229 may be positioned axially in two different ways. If the knob 232 is grasped by the operator and pulled to the right (Fig. 3) and given a counterclockwise twist (Fig. 2) the pin 234 holds the shaft 229 in this extended position by obstructing the return movement of the shaft to the left as seen in Fig. 8. When the shaft is in position, pinion 222 is declutched from the shaft 116 and automatic ejection is prevented. If the operator wishes to,

and bushing 223 tends to hold the pinion 222 in engagement with the collar 225. I With the pinion so connected, any clockwise ejection movement of the sector 220 is transmitted through pinion 222 (Fig. 19), shaft 116,,gears 101 and 1118, clutch member and clutch 111 to turn the platen shaft, and the converse is true in that if the shaft 116 is spaced in line spacing by means of the clutch plate 119, the sector 220 will be advanced step by step in a clockwise direction (Figs. '7 and 9) as line spacing takes place.

As sector 2211 is rocked step-by-step to the right in line spacihg, the tooth 216 (Fig. '7) ratchets idly over tooth after tooth along the line of teeth 214, while member 213 and plate 241 are in a horizontal position. Then, at any selected point in the operation, and when tooth 216 is in mesh with any of the teeth 214, ejection is performed by rocking member 213, pushing link 211 connected thereto through tooth 216 and block 215, rocking sector- 220, turning gears 222, 101, 106, 1119,- 112 and the platen.

After sector 220 is moved in a clockwise direction (Fig. 9) it is restored by a compression spring 242. A link 243 is pivoted at 244 on the .side of sector 220. At the lower end the link is connected to a bell crank 245, pivoted at 238 on plate 138. The crank carries a link 226 with a terminal abutting one end of the spring 242 the other end of which is supported in the casting frame. The counterclockwise restoring move- 'ment of sector 22!! under the urging of spring 242 does not effect any movement of the platen shaft, because the clutch plate 111 thereon and drive member 110 form a one way clutch for driving in the other direction.

A governor is connected to sector 220 through gear 1111 (Fig. l) to prevent a speedy restoration by spring 242. This centrifugal governor 651 is pivoted on stud 652 and carries apinion 653 meshing with an idler gear 654 in mesh with platen drive gear 101.

When the sector 220 is moved to the extreme adjusted position by the actuation of ejecting member 213, the teeth 214 arranged in an are on member 241 form a perfect are about the center 246 where link 211 is secured to sector 220. The radius of the arc is substantially the same as the length of link 211 and thus all teeth 214 are equi-distant from the center 246 in the sector 220 when it is in the extreme eject position.

The mechanism is designed in this way so that the sector 2211 never moves beyond a certain position in ejection regardless of the point at which ejection is started by the engagement of one of the teeth 214 with the toothed block 215 on link 211. If, at the time ejection is initiated, the block 215 engages a tooth 214 nearthe center 2119, the ejection movement of sector 220 is short. On the other hand, if upon ejection initiation the block 215 engages a tooth 214 near the end of member 213 removed from center 2119, the ejection movement of sector 220 is long even though the extreme ejection position of the member 213 is the same as during short ejection.

When thesector 220 reaches the extreme clockwise adjusted position as result of a plurality of line spacing operations. devices are operated to prevent further spacing operation. Line spacing at such a time wouldmove the sector too far in a clockwise direction and demesh pinion 222. An interlock is provided to hold the armature lever 1611 (Fig. 6) in position to prevent the release of the spacing clutch pawl 155. The parts comprising the interlock include a lever 421 pivoted on a stud 422 extending from frame 134. A pin 425 (Figs. 7 and 9) on the side of sector 220 is so positioned that it strikes an offset 423 (Fig. 6) on lever 421 when the sector is moved to the end. of its stroke. On the same stud with lever 421 is pivoted a retaining member 426 which is held in cooperation with the lever by a spring 421 between the two. One end of member 426 cooperates with a lug 424 on lever 421. When the lever is struck by pin 425 and rocked in a clockwise direction, member 426 follows in the same direction with the left end thereof abutting underneath the lever 160 attached to the line space armature 161. Thus operation of the armature lever is prevented by the resistance of spring 421 which can only be overcome by positive operation of lever 204.

When lever 166 is held, it in turn maintains the ineffective positioning of line space pawl to prevent further line spacing of the record sheet. A spring 426 serves to hold member 426 ordinarily in a normal position against a stop stud 429 and out of the path of lever 160.

On the return counterclockwise motion of the sector 221.1 (Figs. 7 and 9) under the pressure of spring 242, the ratchet plate 241 is withdrawn from the toothed block 215 by means of devices mounted on the ejecting member 213. This is done to permit a free movement of the block and link 211 to the left in returning to normal position. A pair of cranks 248 and 249 are pivoted on eject member 213 by means of studs 250 and l which are fixed in the member. The two cranks are pivotally connected to the toothed plate 241 by studs 254 and 265 on the plate which are encircled by arcua'te slots 252 and 253, respectively, in the cranks 246 and 249. The plate also is slotted at 296 and 291 to clear the two fixed studs -256 and 25I on member 2I3. Thus the plate 241 is adapted for both vertical and horizontal shifting with respect to member 2I6. A link 256 connected between the two lower ends of the cranks, completes a parallelogram linkage comprising plate 241, both cranks and the link. If crank .249 is rocked in a counterclockwise direction (Fig. '7) about stud 25I it is apparent that plate 241 will be lowered an equal amount at both ends of the line of teeth 2I4. A latch 261 pivoted at 256 on member M3 is formed with a shoulder cooperating with the end of crank 249 to prevent such a plate lowering motion of the cranks. It ,is only at the mid-point of the eject operation, when member 2I3 is rocked to an upright position, and a lug I46 on latch 261 strikes a stud I66 on the frame, that the crank 249 is released and a spring I61 attached to the other crank 246 operates the linkage to move the plate 241 so that the teeth 2 are out of the path of the tooth 2I6.

Near the end of the eject restoring operation, an extension on crank 249 strikes a fixed pin 246, rocking the crank in a clockwise direction about pivot 25I and raising plate 241 with teeth 2I4 again in cooperation with tooth 2 I 6. Atthe same time latch 261 springs back under the arm of crank 249 to hold the entire linkage in normal position.

A coil spring 642 (Fig. 9) presses between an abutment 64l fastened to link 2" and a terminal link 646 pivoted on sector 226. The object of this construction is to hold link 2" down with toothed block 2I6 thereon urged into cooperation with teeth 2.

It is noted that because of the slots 252 and 266 (Fig. 7), plate 241 is free to move back and forth a slight amount with studs 254 and 266 thereon moving in arcuate slots 262 and 263 in a direction along the length of member 2I6. This construction is devised for moving plate 241 to the right (Fig. 7) to bring the nearest. tooth 2 against tooth 2I6 to eliminate slack and lost motion at the very beginning of the ejection opera'tion. The sliding movement of plate 241 is brought about by devices cooperating with the stud 266 on the plate. Referring to Fig. 9,' it is seen that stud 265 protrudes into a=cam slot 46I in an arm 462 pivoted loosely on stud 269. The slot I is shaped so that when the arm isrocked in a counterclockwise direction the plate 241 is drawn t4: the right. A spring 469 urges the arm 462 in that direction but it is normally prevented from moving because of an abutment 464 in the path of a projection 465 on the arm. The abutment is formed on a lever 466 (Fig. 9A) pivoted at 461 and articulated to an operating arm 466 (Fig. 9) by a link 469. The operating am 466 is fixed to a shaft 416 and at ,the upper end rests on a segment plate 4' fastened to the ejection operating disk 266. Since disk 266 turns in a clockwise direction in ejection, at the very start of the operation, arm 466 drops off the upper concentric surface of segment 4".

In dropping the arm pushes down link 469 and rocks lever 466 in a counterclockwise direction (Fig. 9A) releasing am 462 so that spring 466 may move the arm to draw it down. As the arm lowers (Fig. 9) the cam slot 46I therein shifts the stud 265 and connected plate 241 to the right until contact is made between a tooth 2 and tooth 2I6. This is all done at the instant ejection is initiated. There follows a quick pickup of link 2H and driving of the sector 226 by the rocking of member 2I3 and the attached plate 241.

Early in the second restoring half of the ejection cycle, a cam face 412 on segment 4'" strikes the end of arm 466 and moves it up on the concentric edge of the segment. This movement is communicated to lever 466 and the abutment 466 thereon is brought back into normal position obstructing the downward movement of the projection 465 on arm 462. Thus the plate 241 is shifted back to the left at the end of the ejection operation.

The arm 466 is connected through shaft 416 to other devices for locking the clutch III (Fig. 3A) closed as soon as the paper ejection operation starts. In Fig.2 it is shown that the inner end of shaft 416 carries an arm 413 which is connected to a bell crank 414 by a link 415. The crank is pivoted at 416 and formed with a shoulder 411 adapted to cooperate with extension 416 on lever H9. It is remembered that this lever H9 serves to connect and disconnect the clutchwheel H6 and wheel III through the connection of oiiset I22. in groove I23 of wheel H6. A spring 419 attached to arm 413 tends to rock the shaft 416 but is prevented from doing so by the obstructing segment plate "I (Fig. 9) which prevents the rocking of arm 466 attached to the other end of shaft 416.

However,- as soon as plate 4' is moved in a clockwise direction, arm 466 is free to fall under the urging of spring 419. (Fig. 2) and bell crank 414 is rocked in a clockwise direction to place shoulder 411 against the left side of extension 416 (Fig. 3A) thus cammi'ng and holding the clutch III closed during the driving portion of the ejection cycle.

Another interlock is operated as soon as ejection is initiated. This mechanism serves to pull 464 carrying a link 465 guided by a screw 466 on the side plate 56. The end of the link is formed with an upward extension 461 engaging behind a lug 466 on detent arm H4. A spring 469 is attached to another lug on the end of detent I-. I4

andtends to hold the positioning roll H3'thereon into contact with the teeth H2 of the clutch star wheel III. However, as soon as link 2I6 (Fig. 7) is pulled up in ejection, the stud H2 is moved in an are about center 269.1 A pin 49I in member 2I3 prevents cam 46I from rocking on pivot 2I2. The cam 46I (Fig. 2) carried thereon strikes a cam face 496 on the inner face of a lever. 462, rocking the lever in a .clockwise direction. Arm 464 is rocked along therewith and pulls link 465 to the right. The end 461 of the link engages lug 466 and rocks detent H4 in a counterclockwise direction about center H5, thus moving-roll I I6 away from teeth. This ineffective position of the detent is maintained during the' operating half of the ejection cycle because 7' the inner arcuate edge of level 482 contacting cam 48I is concentric with the path of the cam after the lever is rocked.

At the end of the first half of the ejection stroke, the cam 48I moves beyond the upper end of lever 482 and then the lever is free to move in a counterclockwise direction to normal position as urged by spring 489. Detent II4 follows along therewith to again position the star wheel. Cam I does not disturb lever 482 on the downward restoring movement of'member 2I3, be-.

cause the cam is free to turn in a counterclockwise direction (Fig. 2) on pivot 2I2. A coil spring 492 (Fig. 3) urges cam 48I to normal position against pin 49I at the end of the cycle when the cam passes below cam face 490.

The return stroke of sector 220 may be adjust- .ably varied to determine the length of the record sheet form to be printed upon in the machine.

The form may be shortened by stopping the sector 220 at any point along its travel towards the left (Fig. '1). For this purpose, a lever 259, pivoted on shaft 22I carries a stopping block 493 cooperating with a stud 260 mounted on the side.

of sector 220. The upper end of the form length setting lever 259 is adapted to be adjusted around and held in any position along an are formed by a segmental index plate 26I.

This index plate is secured at 264 to a frame plate 262 which is held to casting I34 by screws 263, and at the other end the index plate encircles shaft 265. The surface of the index plate is inscribed with long lines representing inches of spacing, and short lines representing lines of printing spacing. A pointer 266 is formed on the end of lever 259 opposite a gripping plate 491 to indicate the length of sheet selected. The bottom edge of plate 26I is formed with rack teeth 261 which are engaged by a key in the shape of a pinion that is inserted in aperture 495 and turned to move lever 259 and sector 220 to a selected position against the pressure of spring 242.

When the selected position is reached, the lever may be locked in place by turning a nut 496 on a screw passing through the gripping plate. Corrugations on plate 26I and lever 259 lock the lever in place when plate 491. is drawn towards lever 259 to pinch index plate 26I therebetween. As shown in Fig. 7 the .lever 259 and sector 220 are positioned to handle record forms 12 inches in length.

It is mentioned hereinbefore, with respect to selection of speed of ejection, that contacts I51 (Fig. 4) are opened if a high speed gear train is selected and that other contacts must be closed by a selection of less than 3 inches of ejection spacing. These other contacts 499 (Fig. 7) are closed by lever 259 when said lever is set for a length of form shorter than 3 inches. A cam face 504 on lever 259 cooperates with a tab 502 formed on a lever 500 pivoted at 50I on the side of frame plate 262. The bottom of a vertical arm on lever 500 cooperates with contacts 499 so that when the lever is rocked in a clockwise direction by cam face 504, the contacts are closed. A spring 503 is adapted to hold lever 500 in an inoperative position when lever 259 is moved to the left to select forms longer than 3 inches. The wiring of contacts I51 and 499 to the operating motor CM is described more fully hereinafter.-

A series of contacts are employed to control the ejection and line space magnets and the tabulating start and stop devices. These contacts are supported on the inside of the casing I34,

I39 and near the front of the machine. In Figs. 3, '7 and 8, it is seen that a channel bar 505 supports three blocks 506, 501 and 508 each holding a pair of contacts. The channel is secured to casting I34 and formed to hold stud 509 and shafts 5I0 and 5H supporting the operating members for the contacts.

The machine is provided with devices for skipping a variable amount of space between the last item of a heading and the printing line for the first item on the form. It is described hereinafter how the line spacing magnet LSM is energized to start the skipping operation. After. an adjustable amount of the form is fed the space skipping is stopped by opening contacts 498 (Fig. 7) by devices about to be described.

The skip stop contact 498 is held closed by a bell crank 5I2 fastened to shaft 5I0. The crank in turn is held by a latch 5| 3 pivoted on shaft 265 and formed with a shoulder engaging a lug 5I4 on the crank. At the end of the latch is pivoted a flipper 5I5 on stud 5I6. The latch is operated by an adjustable tripping lever 5I1 fastened to an arcuate slotted plate 5I8 secured to sector 220. The upper end of the lever 5I1 is formed with'a pointed cam face which cooperates with iiipper 5I5 to rock the latch and release the bell crank 5I2. Because the mounting of flipper 5I5 is uni-directional, the latch 5I3 is tripped only when lever 5I1 passes in a clockwise direction. A pointer 5I9 on the lever 5" may be set to the proper point along scale 26I so that the first item may be printed at any line of the record form. As shown the skip stop is set for 2 inches which is the space allowed between the top of a heading and the first item. A screw and nut connection 520 extending through lever 5" and a slot 52I in plate 5I8 may be moved along the slot and fastened in the desired position. If the skip stop operation is not needed, lever 5" may be moved to the right end of the slot.

When bell crank 5I2 is released, a spring 522 urges it in a clockwise direction to lower an insulation finger 523 away from contacts 498 and against contacts 292. Thus contacts 498 are opened and contacts 292 are closed for purposes described more fully hereinafter. The shaft 5I0 is attached to bell crank 5I2 so that it also turns to place an arm 524 (Fig. 6) thereon in the path of a roller 525 on the line space operating arm I68. The roller serves to restore the bell crank to the latched position shown in Fig. '7.

As explained hereinbefore, the ejecting operation is controlled by the energization of magnet EM. This magnet is energized at various times according to the setting of the controls and the closing of contacts to form a completed circuit. For one form of control the contacts are closed as the printing on the record form approaches the end of the form. These contacts 269 (Fig. 7) are operated by an insulation finger 210 fastened to one end of a lever 21! pivoted on stud 509. The other end of the lever is formed with a lug 212 engaged by a latch 213 pivoted on shaft 265 alongside latch 5I3. Latch 213 is operated at a selected point in the feeding of a record form, by a cam face on the upper end of an eject lever 214 loosely pivoted on shaft 22I and held in place by a nut and screw 215 projecting through slot 52I. A pointer 526 on the lever indicates the inches of space through which the record form is line spaced before ejection begins.

When lever 21I is in the normal position, insulation finger 210 holds contacts 405 closed for reasons set forth hereinafter.

However, when lever 214 strikes latch 218, lever 2" is unlatched and free to rock in a clockwise direction as urged by spring 521. Thus finger 218 is lowered to open contacts 485 and close contacts 288 which are in series with the eject magnet EM and adapted to initiate an eject cycle of operation.

The lever 2 is restored by a link 218 connected thereto by a pin and slot formation 211.-

Individual coil springs 218 restore latches 218 and Ill.

When an eject operation takes place, various electrical and mechanical devices in the machine which, as is noted from the foregoingsection of.

the description, turns through a complete clockwise revolution during an ejecting operation.

Cooperating with the cam plate 288 is a contact operating lever 218 pivoted at 288 on plate I88 and drawn by spring 2" into contact with the periphery of the cam plate. The upper end of the lever 218 is formed witli a projection 282 which acts as a cam face and also as a latch in cooperating with a notch 288 out in the periphery of plate- 288. Early in each eject cycle the side of the notch 288 acts as a cam face to rock the lever 218 in a clockwisedirection, moving down an arm 284 connected thereto by pin and slot connection 285. The arm is fastened to one end of shaft 5 the other end of which carries a member 281 with an insulation finger 288 for opening and closing contacts 288 and 28!.

The initial movement of cam lever 218 serves to open contacts 288, but contacts 28l are closed later in the operation when a projection 288 on cam plate 288 strikes the end 282 of the lever, rocking it further in a clockwise direction and lifting finger 288 against contacts 281. This final lifting movement serves also to restore lever 2 (Fig. '1) which is rocked counterclockwise by link 218 attached to member 281 by stud 288.,

As the plate 288 moves in a clockwise direction,

at about the mid-point of the operation, another cam face 288 strikes the end of lever 218 and rocks it a slight amount in a clockwise direction. When the lever is so operated, the arm 284 and a link I12 connected thereto at 284 are lowered. It is mentioned hereinbefore that this link is joined to detent l8l by pin and slot connection I85. It is through this connection that the detent l8l is rocked a slight amount in a clockwise direction at the mid point of the eject cycle. This is done to permit a free return motion of the line spacing shaft I18 under control of theconnections from the ejecting mechanism.

The machine is provided with devices for guiding the record strip as it enters the carriage. For this purpose a frame 588 (Fig. 11) is secured to the tabulating frame and holds a shaft 58l to which a removable sheet holder 588 may be fastened. Theupper part of the sheet holder is formed in the shape of a pair of channels 584 and 585 through which the paper may pass in moving down over the guide 14 on frame 58. The holder 588 may hold the record material in a l'hese and other controls Y roll or fan-folded forms with or without carbons.

Certain forms of record material are provided with perforations along the outer edges, which perforations are adapted to be used in feeding one or a plurality of such sheets with interspersed carbons. Figs. 10 and 11 show pin feed mechanism which may be attached to the carriage and removed whenever ordinary paper material is used. The side frames 11 of the carriage support pairs of studs 585 and 581 upon which a pair of pin feed side frames 588 may be assembled. The frames 588 are formed with a pair of grooves fitting around the studs 585, 581 but readily removable therefrom. The frames carry a rotatable shaft 588jupon which is assembled a pair of pin feed wheels 5 48. Referring to Fig. 10, it is seen that each wheel is formed with a bushing 54l carrying a key 542 located in a key slot 548 out along the length of. shaft 588. By means of this construction the pin feed wheel 548 may be shifted along shaft 588 to accommodate any width of record material. The bushing 5 carries the locating screw 544 which may be turned to fasten the wheel to the shaft to prevent axial movement. The shaft 588 also carries a number of wheels 545 similar to wheels 548 in all respects except the omission of the pin feed projections appearing on the feeding wheels. These last mentioned wheels are used to support the paper at any point between the wheels 548.

At the right end of shaft 588 (Fig. 10) is fixed a gear 545 in mesh with an idler gear 541 (Fig. 11) pivoted on stud 548 on side frame 588. This gear 541 meshes with another gear 548 pivoted at 558 on-the bottom of the left frame 588. The last mentioned gear forms a removable driving connection with an idler pinion 55I pivoted on shaft 552 located in the carriage side frame 11. This gear 55i meshes with the platen drive gear 88 already mentioned. Through this described train of gearing all motions of the platen shaft 58 in line spacing or ejection is transmitted to shaft 588 for the feeding of perforated sheets.

Cooperating with the pin feed wheels 548 is a pair of grooved rollers for holding the recordmaterial down into engagement with the projections on the wheels. These devices are mounted on a shaft 558 braced across the top of frames 588. An arm 554 holds each of the guide rollers 555 in position above the related wheel 548. The guide arm 554 is held in position by a screw 558 attaching the arm in any selected position along shaft 558. Arms 554 are formed with a cam projection 551 cooperating with a leaf spring 558 secured to the frames 588. If the arms 554 are rocked in a clockwise direction (Fig. 11) through an angle of about ninety degrees, the spring 558 engages behind projections 551 and holds the rollers 555 out of engagement with wheels 548. I

The right side frame 588 is formed with an offset flange 558 covering the gear 546. Another guard in the shape of a projection 558 is fastened to the side of frame 11 in position to cover the platen driving pinion 88.

Before considering the wiring connections of the automatic carriage control devices, it is believed well to outline the operation of the tabulating machine with which the devices cooperate.

- The printing devices of such a machine are 11- lustrated in Fig. 1 and the adding, printing group control and other control devices are shown diagrammatically in 123. Most of the matis ter of interest in connection with the present case is described in detail in Patent No. 1,762,145. The general details of construction of the machine are well known in the art and described in said patent, consequently there will be given herein only a brief explanation of such parts thereof as are necessary to an understanding of the present invention. It will be helpful in understanding the invention herein if it be noted that cam contacts identified by the letter L on the circuit diagram are operated by the tabulating mechanism through connections to the motor TM operative during listing operations, while the cam contacts identified by the letter P are operated by the resetting and total taking mechanism through the power of the motor RM.

Referring to Fig. 123, the record cards are successively fed from a stack and advanced past the upper analyzing brushes UB and exactly one machine cycle later past the lower analyzing brushes LB. Suitable wires connect these brushes to a plugboard terminating in sockets 3 l3 and 3 respectively. The plugboard also includes sockets 3I5 which are connected to the accumulator magnets AM. As the perforated cards pass the upper brushes, a card lever is engaged by the cards to cause closure of card lever contacts UCL and hold them closed as long as cards continue to feed past the upper brushes.

As the cards pass the lower brushes their index points instantaneously close circuits through the proper lower analyzing brushes LB to energize accumulator magnets AM. As usual, the timed energization of these magnets control 'mechanism for entering data corresponding to the card reading on the accumulator wheels.

When any magnet AM is energized, it causes contacts 3 l 6 to close, energizing a printer magnet PM to select the type corresponding to the entered data for printing. In this fashion the accumulated or entered items may be listed.

In Fig. 1 is shown the printing mechanism through which the type bar 53 is positioned relatively to the platen 5| to bring the proper type 3|! opposite the platen. The listing shaft 3 driven by the tabulating motor TM is provided with a cam 3|8 cooperating with a roller 3l9 carried by an arm 320 operatively connected to a shaft 32l. As the cam rotates, shaft 32lis rocked in a clockwise direction and an arm 322 secured thereto and linked at its free end to printing cross-head 323, serves to raise the type bars 53in synchronism with the movement of the record cards past the analyzing brushes so that the type 3" successively pass printing position opposite platen 5|. The type bar 53 is arrested under control of printing magnet PM,

which, when energized, attracts its armature 324 and through a call wire 325 releases latch mem-' ber 326, normally holding stop pawl 321.

When the pawl is so released, it is spring operated to engage the ratchet teeth 328 formed on the type bar 53 to prevent further upward movement of the type bar, thus holding a particular type 3" in printing position. The usual hammers 329 are provided to impel the type against the platen.

During tabulating and listing operations the machine is driven .by the motor TM (Fig. 123) controlled by a group of relays and contacts shown at the top of the sheet. The circuit which serves to maintain the motor TM in operation is as follows: from left side of line 309 through motor 'I'M, relay .330, clutch magnet 33l, motor relay 332, its contact points 333 (closed while the the usual series contacts to During total taking operations the machine is driven by a reset motor RM controlled by a group of circuits, contacts and relays designated generally at 350. Shaft 3l2 (Fig. 1) is connected to be rotated by the reset motor during total taking. A cam 336 on the shaft cooperates with an arm 33! on shaft 32! to lift the type bars 53 in synchronism with the rocking of contact levers 338 (Fig. ILZB).

These levers cooperate with the stepped cams 339 on the accumulator wheels and serve to read the total amount registered thereon by closing contacts 340 in series with the printing magnets PM which then stop the type bars in the proper printing position in the manner noted hereinbefore.

With the machine adjusted for listing data fromieach card passing the brushes, the following circuits are completed through the lower brushes: from line 3I0, contacts P3, L33, wire 400, contacts LLCLI, wire 35I, impulse distributor 353, contact plate 34 I, through the perforation in the card, brush LB, socket 3, connection wire 342, socket 3l5, magnet AM, contacts 343, and' ations, to line 3l0.

The major and minor automatic group control system used in the tabulating machine will be briefly described to bring out certain selective switching features. One form of such a control system is fully disclosed in Bryce Patent No. 1,983,308. The usual automatic control magnets are shown at 43l (Fig. 33) and are provided with prevent sparking at the analyzing brushes. Each control magnet is adapted to be pluggedin series between related upper and lower analyzing brushes to effect automatic control from any card column.

The automatic control contacts-432 of which one is associated with each "control magnet, are arranged to close individually when the corresponding control magnet 43l is energized andall of them are opened simultaneously towards the end of each tabulating or listing cycle. When the control perforations on successive cards under't'he upper and lower analyzing brushes agree, all control contacts 432 which are properly pluged for automatic control, close at some-v time during the cycle, while when the control perforations fail to agree, one or more of the con-'- tacts fail to close.

The automatic control contacts .432 are all 

